An Interactive Visual Object Tracking Technology for Juvenile Fish Motion Trajectory Extraction

Building hydropower stations continually destroyed the fish habitats and prevented some species of fish from tracing back to spawn. The construction of fishways can effectively alleviate these problems. Therefore, it is necessary to provide practical advices for the construction of fish ladders through analyzing fish motion trajectories. In this paper, we focus on juvenile fish motion tracking and trajectory extraction. Because the target is small and non-rigid, it is difficult to track them correctly during a long period. With the above considerations, this paper presented an interactive object tracking system based on real time compressive tracking algorithm to extract juvenile fish motion trajectories. In order to effectively reduce the number of interactions, a target sample reselection method is proposed with the help of fish swimming direction constrains. The experimental results showed that this system can track a juvenile fish accurately for a long time and extract its trajectory effectively.